Reducing Heat Pump Noise
Quiet operation with the Silentbox
If your heat pump or air conditioning unit is too loud, the Silentbox offers a simple and effective way to reduce noise. It helps to significantly lower sound levels without affecting the performance of your equipment.
As heat pumps and cooling units become more common in residential areas, noise reduction is no longer just a nice-to-have — in many cases, it's a necessity to ensure peace for you and your neighbors.
Comfort Without Compromise
Reliable noise control with easy installation
The Silentbox offers strong noise reduction while maintaining the full technical performance of your heat pump. Installation is quick and non-invasive — no modifications to the unit are required. The result is a quieter, more comfortable environment for everyone nearby.
Thanks to adjustable air flow direction, the Silentbox is suitable for various installation scenarios. Condensation drains easily through the open sections in the base frame.
Heat Pump Enclosure – Silentbox
Simple look, impressive results
The enclosure is made of painted steel (RAL 9010) and filled with high-quality sound insulation. All materials are designed to withstand weather exposure and meet fire resistance class B according to EN 13501-1.
The base frame is made of galvanized sheet metal. The intake and exhaust air zones are separated by a flexible membrane to prevent air mixing during operation and ensure stable performance.
Acoustic attenuation D -15 dB
Peace in the house and garden, the pump remains unobtrusive to neighbors and the surroundings.
Protection for the heat pump
The cover protects the pump from rain, snow, UV radiation, and dirt. The result is a longer lifespan and lower maintenance costs.
Increase in property value
Adds value to the property – appears well thought-out and professional.
Aesthetic enhancement of the house
Conceals the technical equipment, improves the overall appearance of the house, and makes a strong impression.
Easy installation
Minimal construction work.
by installing Silentbox
in the Czech Republic, Slovakia, Austria, Germany, Poland, France, the Netherlands, Belgium, Switzerland, and Italy.
Rating and designing
To achieve maximum effect
The noise cover for the heat pump or air conditioning unit is designed with respect to its size, cooling air need, and fan pressure reserve.
Price from €930
List price excluding delivery and installation.
Technical data
| Size of the silencing cover and attenuation | X | YT | YS | Z | A | B | weight (kg) |
| instalation on floor | instalation wall | ||||||
| Alfa S | 1560 | 1115 | 1175 | 790 | 940 | 1015 | 128 |
| Alfa SU | 1720 | 1115 | 1175 | 790 | 940 | 1015 | 179 |
| Beta S | 1950 | 1305 | 1365 | 1030 | 1170 | 1205 | 178 |
| Beta S plus | 1950 | 1305 | --- | 1250 | 1170 | 1205 | 203 |
| Beta SU | 2250 | 1305 | 1365 | 1030 | 1170 | 1205 | 229 |
| Beta SU plus | 2250 | 1305 | --- | 1250 | 1170 | 1205 | 254 |
| Gama S | 2150 | 1625 | 1685 | 1180 | 1170 | 1525 | 220 |
| Gama S plus | 2150 | 1625 | --- | 1400 | 1170 | 1525 | 250 |
| Gama SU | 2550 | 1625 | 1685 | 1180 | 1170 | 1525 | 296 |
| Gama SU plus | 2550 | 1625 | --- | 1400 | 1170 | 1525 | 326 |
| Delta S | 2910 | 1650 | 1745 | 1680 | 1200 | 1610 | 278 |
| Delta S plux | 2910 | 1650 | --- | 1900 | 1200 | 1610 | 313 |
Technical data
| Size of the silencing cover and attenuation |
Max. size of heat pump or cooling unit w x h x d | Air flow Q / cover pressure loss m3/h | Pa | ||
| Alfa S | 800 x 1035 x 350 mm | 1250 m3/h | 15 Pa | 1600 m3/h | 25 Pa | 2000 m3/h | 40 Pa |
| Alfa SU | 800 x 1035 x 350 mm | 1500 m3/h | 15 Pa | 1900 m3/h | 25 Pa | 2400 m3/h | 40 Pa |
| Beta S | 1030 x 1225 x 430 mm | 2100 m3/h | 15 Pa | 2700 m3/h | 25 Pa | 3400 m3/h | 40 Pa |
| Beta S plus | 1030 x 1225 x 650 mm | 2100 m3/h | 15 Pa | 2700 m3/h | 25 Pa | 3400 m3/h | 40 Pa |
| Beta SU | 1030 x 1225 x 430 mm | 2500 m3/h | 15 Pa | 3250 m3/h | 25 Pa | 4100 m3/h | 40 Pa |
| Beta SU plus | 1030 x 1225 x 650 mm | 2500 m3/h | 15 Pa | 3250 m3/h | 25 Pa | 4100 m3/h | 40 Pa |
| Gama S | 1030 x 1545 x 430 mm | 3450 m3/h | 15 Pa | 4400 m3/h | 25 Pa | 5550 m3/h | 40 Pa |
| Gama S plus | 1030 x 1545 x 650 mm | 3450 m3/h | 15 Pa | 4400 m3/h | 25 Pa | 5550 m3/h | 40 Pa |
| Gama SU | 1030 x 1545 x 430 mm | 4250 m3/h | 15 Pa | 5450 m3/h | 25 Pa | 6850 m3/h | 40 Pa |
| Gama SU plus | 1030 x 1545 x 650 mm | 4250 m3/h | 15 Pa | 5450 m3/h | 25 Pa | 6850 m3/h | 40 Pa |
| Delta S | 1030 x 1650 x 430 mm | 6200 m3/h | 15 Pa | 8100 m3/h | 25 Pa | 10300 m3/h | 40 Pa |
| Delta S plux | 1030 x 1650 x 650 mm | 6200 m3/h | 15 Pa | 8100 m3/h | 25 Pa | 10300 m3/h | 40 Pa |
Ground installation
Installing the heat pump cover on the ground ensures stable and secure anchoring without the need to alter the building façade – ideal for easy maintenance and service access. It also allows flexible placement in the garden or on a paved area according to the property layout.
Wall installation
Mounting the cover on the wall saves ground space, which is advantageous in smaller areas or where access is limited. The elevated position also improves airflow around the unit, supporting efficient operation.
Photos of installations
from our customers
Silent / Supersilent
In addition, the cover size depends on type and size of the unit, and last but not least on volume of the ventilation air. The pressure drop of the Silent / Supersilent noise covers depends on the unit air volume. For pressure loss, refer to the technical data table.
Considering the unit output, always consult supplier or manufacturer of the heat pump or the cooling unit for the pressure reserve of the fans. For non-standard solutions, contacting the technical team of Stavoklima or an authorized technical office is recommended. Noise control Covers are not intended for devices using refrigerant R290.
Do you like SilentBox?
We will be happy to supply it to you.
Use our ACUCALC application or contact us by phone or e-mail to design the noise cover for heat pump or air conditioning unit.
